Hairpin



Mar; 3. "1925.

L- STEINBERGER HAIRPIN Filed Feb. 8, 1924 139d 1&2. 0 f

Lao/'5 kj flhbelye 93:1 el flue 1m Patented Mar. 3, 1925.

LOUIS STEINBERG-ER, 0F BROOKLYN, NEW YORK.

HAIRPIN'.

Application filed February 8, 1924. Serial No. 691,354.

To all whom it may concern.

Be it known that I, LOUIS STEINBERGER, a citizen of the United States, and a resident of the borough of Brooklyn, county of Kings, State of New York, have invented certain new and useful Improvements in Hair-pins, of which the following is a specification.

The invention relates to hair-pins so constructed as to cause them to turn onfa vertical axis through an arc of 180 degrees while being inserted in place in the hair of the wearer, and to reversely turn through the same are of 180 degrees on being withdrawn.

The objects of the invention are to provide a hair-pin which can be readily and inexpensively produced, which can be easily placed in the hair and so constructed that y means of a properly placed curved portion or section in one of its prongs that upon engagementof the curved portion of that prong with the hair while being inserted therein, the pin will turn upon itself through an arc of 180 degrees, thereby causing the hair to be locked into the pin to hold the same in permanent position, at the same time, the pin, upon being withdrawn from the hair, will again rotate reversely through the same arc, thereby permitting a ready and easy withdrawal of the hair-pin without discomfort to the user thereof.

Referring to the drawings in which the same character indicates the same part in the several views:

Fig. 1 is a front elevation of a hair-pin embodying my invention.

Fig. 2 is a side elevation thereof.

Fig. 3 is a section on line 8-8 of Fig. 2.

Fig. 4 is a grouped illustration of the position of the hair pin while it is being inserted into the hair.

As clearly shown in the drawings, one of the prongs is straight and the other prong is provided substantially intermediate thereof with a curved portion or section, the curved section of one prong crossing the adjacent straight prong approximately mid way thereof, so that the apex of the curved portion projects upon the straight prong; the juncture of the bent portion with the prong is preferably slightly curved as distinguished from a sharp angular bend at the juncture.

The space between the prongs below the bend is greater in area than the space between the prongs above the bend, consequently, the hair which is originally placed in the lower portion of the pin will be pressed into the lesser space between the prongs at the upper portion of the pin.

By reason of this fact, when pressure is applied at 0, Fig. 4, a portion of the hair which initially filled the space between the prongs below the bend will be forced into the smaller space between the prongs above the bend and wrapped around the pin during its turn through an arc of 180 degrees. Upon withdrawing the pin from the hair the reverse movement will take place and the pin by merely turning back through the arc of 180 degrees can be removed from the hair without discomfort.

The hair-pin may be made of wire or of any other suitable material such as bone, shell or composite.

Having described the invention what- I claim and desire to secure by Letters .Patent is:

1. A hair-pin which comprises, a pair of prong portions and a connecting bridge portion, one of said prong portions being straight throughout its length and the other prong being bent to form a spiral portion centered on the straight prong as an axis and at a point substantially midway of the prong from the bridge portion and then extending upon the other side of said straight prong in parallel spaced relation thereto.

2. A hair-pin which comprises, a pair of prong portions and a connecting bridge portion, one of said prong portions being straight throughout its length and the other of said prong portions being straight through the upper portion of its length and being curved in a portion of its length centered on the straight prong as an axis and extending a straight line in parallel spaced relation to the straight prong upon the opposite side thereof, the distance of said prongs from each other at the said curved portion being approximately equal to the being curved substantially midway of its distance of each prong from the other at length to form a spiral portion centered 1.

their adjacent straight portions. on the straight prong as an axis, and then 3. A hair pin which comprises a pair of continuing in straight line in parallel spaced 5 prongs and a connecting bridge portion, relation to the straight prong, the straight one of the prongs being straight throughout portions of each prong lying in the same its length, the other prong extending in a plane. straight line from the bridge portion and LOUIS STEINBERGER. 

